Abstract:After the implementation of underwater tunnel structural health monitoring system, due to the influence of extensive construction, environmental interference, equipment failure and other problems, the sensor readings often have some abnormalities, which need to be debugged in time to make it return to normal, so as to ensure the real-time and accuracy of data acquisition. Taking the completion mode of typical underwater tunnel structural health monitoring system as an example, this paper expounds the debugging process of 47 abnormal data sensors, defines the principles of system debugging, puts forward the methods of monitoring center debugging, acquisition station debugging, line debugging and sensor debugging, and analyzes the debugging results and Enlightenment to the construction stage. It provides reference for system commissioning of similar projects.